Vitreomacular Interface Abnormalities Indiabetic Retinopathy Using Ocular Coherence Tomography

Diabetic retinopathy (DR) is a leading health concern and a major cause of blindness .DR can be complicated by scar tissue formation, macular edema tractional retinal detachment. Optical coherence tomography has found patient with DR has diffuse retinal thickening , cystoid macular edema ,posterior hayaloid traction ,tractional retinal detachment.

The VMI in patient with DR can influence the emergence ,progression ,and treatment of DR.

The role of posterior hyaloid and vitreous on viteromacular interface abnormalities The anomalous separation of vitreous cortex from ILM can lead to abnormal vitreomacular interface. This separation can happen when liquefaction occur faster than detachment of the vitreous cortex or when an abnormal adhesion of the vitreous cortex to the ILM occur.

The VMI abnormalities in DR include I. Vitreomacular adhesion The International Vitreomacular Traction Study group has defined the vitremacular adhesion as specific stage of vitreous separation when partial detachment of the vitreous in perifoveal area has occurred without any abnormalities to the retinal contour.

II. Vitreomacular traction There is abnormal vitreous adhesion, there can be excessive traction on the macula from the vitreous that change the contour of foveal surface. By OCT any distortion of foveal contour together with partial posterior vitreous detachment is considered vitreomacular traction . In accordance with the International Vitreomacular Traction Study Group definition vitreomacular traction can be classified as focal or broad based on horizontal area of adhesion.